A Saskatoon ALS patient is issuing an ambitious ice bucket challenge.

Larry Machula is in care at the Parkridge Centre in Saskatoon. He posted a three-minute video on YouTube where he challenges a range of celebrities to take the charity challenge.

"Mick, I waved to you at the Hotel Saskatchewan where you played at the city you said rhymed with fun," he said in the video.

Machula is referring to when the Rolling Stones played in Regina. He challenges each Stone by name – including retired bassist Bill Wyman – to get a bucket of ice water dumped on their heads.

He also called on singers Shania Twain and Celine Dion.

Machula backed up his words with action.

With the help of nurses, Machula had three buckets of ice water dumped over his own head. Each bucket had a separate letter – A, L and S.